1. ZM-NB47J does not require a fan, thus does not need to be powered, and does not generate noise
    or vibration.
2. The Northbridge chipset can be cooled to an optimal temperature without generation of noise.

- Recommended CPU Coolers
    CNPS6000 (Socket 462), CNPS6500B (Socket 478), CNPS7000B (Socket 462/478/754/939/940), 
    and CNPS7700 (Socket 775/478/754/939/940) allow more stable and silent operation.
 
Compatible Northbridge Chipsets
1. ZM-NB47J is compatible with all Northbridge chipsets that do not have a built-in graphics core.
2. Northbridge chipsets with built-in graphics core are compatible ONLY IF the following conditions
    are met.
    1) The Northbridge chipset MUST be located between the CPU socket and AGP (or PCle) slot.
    2) The CPU cooler must be one of the Recommended CPU Coolers mentioned above.